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Code Issues Releases Wiki Activity

Fixed crash in GL viewers w/ LegacyGregory

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Fixed a crash (assertion failure on Windows) that occurs when
creating GLLegacyGregoryPatchTable for a mesh that requires
no Gregory patches.
This commit is contained in:
David G. Yu 2015-06-11 17:26:21 -07:00
parent 34fab03921
commit d4a18a6c98
1 changed files with 24 additions and 18 deletions
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42
opensubdiv/osd/glLegacyGregoryPatchTable.cpp
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@ -57,27 +57,33 @@ GLLegacyGregoryPatchTable::Create(Far::PatchTable const *farPatchTable) {
Far::PatchTable::QuadOffsetsTable const &
quadOffsetsTable = farPatchTable->GetQuadOffsetsTable();
GLuint buffers[2];
glGenBuffers(2, buffers);
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]);
glBufferData(GL_ARRAY_BUFFER, valenceTable.size() * sizeof(int),
&valenceTable[0], GL_STATIC_DRAW);
if (not valenceTable.empty()) {
GLuint buffer;
glGenBuffers(1, &buffer);
glBindBuffer(GL_ARRAY_BUFFER, buffer);
glBufferData(GL_ARRAY_BUFFER, valenceTable.size() * sizeof(int),
&valenceTable[0], GL_STATIC_DRAW);
glBindTexture(GL_TEXTURE_BUFFER, result->_vertexValenceTextureBuffer);
glTexBuffer(GL_TEXTURE_BUFFER, GL_R32I, buffers[0]);
glBindTexture(GL_TEXTURE_BUFFER, 0);
glBindTexture(GL_TEXTURE_BUFFER, result->_vertexValenceTextureBuffer);
glTexBuffer(GL_TEXTURE_BUFFER, GL_R32I, buffer);
glBindTexture(GL_TEXTURE_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glDeleteBuffers(1, &buffer);
}
glBindBuffer(GL_ARRAY_BUFFER, buffers[1]);
glBufferData(GL_ARRAY_BUFFER, quadOffsetsTable.size() * sizeof(int),
&quadOffsetsTable[0], GL_STATIC_DRAW);
if (not quadOffsetsTable.empty()) {
GLuint buffer;
glGenBuffers(1, &buffer);
glBindBuffer(GL_ARRAY_BUFFER, buffer);
glBufferData(GL_ARRAY_BUFFER, quadOffsetsTable.size() * sizeof(int),
&quadOffsetsTable[0], GL_STATIC_DRAW);
glBindTexture(GL_TEXTURE_BUFFER, result->_quadOffsetsTextureBuffer);
glTexBuffer(GL_TEXTURE_BUFFER, GL_R32I, buffers[1]);
glBindTexture(GL_TEXTURE_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glDeleteBuffers(2, buffers);
glBindTexture(GL_TEXTURE_BUFFER, result->_quadOffsetsTextureBuffer);
glTexBuffer(GL_TEXTURE_BUFFER, GL_R32I, buffer);
glBindTexture(GL_TEXTURE_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glDeleteBuffers(1, &buffer);
}
result->_quadOffsetsBase[0] = 0;
result->_quadOffsetsBase[1] = 0;